Also, for reasons of understanding, if the TVX superheat was much, much higher than 8°F, how would this be felt in system performance? I'm not a MVAC engineer, but to answer your question, I believe that with a much higher TXV superheat, the evaporator will be warmer because the liquid refrigerant ...

The test link brings me to a 2004 archive with Anonymous and Chick as the posters.

The important point to remember about superheat is that you don't want any liquid refrigerant to enter the compressor after it exits the evaporator because any liquid will "slug" the compressor and most likely, damage or destroy it. The refrigerant will be in a superheated state from the e...

How about the original TXV...is it still serviceable? A TXV doesn't "care" whether it's R-12 or R-134a that's used.

Place a thermometer in the center vent and keep it there so that you can monitor A/C performance as you drive. Should temperatures rise into the uncomfortable range, you'll know immediately that you have a problem, verified by the thermometer.

I had assumed that when the AC is evacuated, the oil would stay in the system and only the refrigerant is removed. The oil will stay in the system during evacuation prior to recharging. During recovery of the refrigerant using an RRR machine, some oil usually comes out. It accumulates in a graduate...

I should also have mentioned the cabin air filter has been maintained. Excellent. I found the following on the internet, regarding a "rough test of the AC system would be to turn the fan on low, set the temp at minimum, set the vent to fresh air, run the engine rpm at around 2500. Measure the ...

Generally, seasonal refrigerant losses will occur over time, usually from seepage through the compressor-shaft seal. My main concern is operating an MVAC system with a lower-than-optimal refrigerant charge, which will cause the compressor to run with less oil, risking internal damage or even complet...

On this Forum, we don't advocate the use of non-EPA-approved refrigerants. See "Forum rules," Item #3. So I'm afraid we can't help you with that question. Please DO post again with any additional questions you might have.

Rweaver428 wrote: ↑Sat Apr 20, 2024 7:42 am I will gladly scan the Clardy docs and attach them if it would help someone.

I'm curious about the original R-12 spec...I would guess about 3 pounds.